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WO2008108083A1 - Voice encoding device and voice encoding method - Google Patents

Voice encoding device and voice encoding method Download PDF

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Publication number
WO2008108083A1
WO2008108083A1 PCT/JP2008/000407 JP2008000407W WO2008108083A1 WO 2008108083 A1 WO2008108083 A1 WO 2008108083A1 JP 2008000407 W JP2008000407 W JP 2008000407W WO 2008108083 A1 WO2008108083 A1 WO 2008108083A1
Authority
WO
WIPO (PCT)
Prior art keywords
pitch pulse
pulse
pitch
point
unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2008/000407
Other languages
French (fr)
Japanese (ja)
Inventor
Hiroyuki Ehara
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Panasonic Holdings Corp
Original Assignee
Panasonic Corp
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Corp, Matsushita Electric Industrial Co Ltd filed Critical Panasonic Corp
Priority to US12/528,880 priority Critical patent/US8364472B2/en
Priority to EP08710510A priority patent/EP2128855A1/en
Priority to JP2009502461A priority patent/JP5596341B2/en
Publication of WO2008108083A1 publication Critical patent/WO2008108083A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/005—Correction of errors induced by the transmission channel, if related to the coding algorithm
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/09—Long term prediction, i.e. removing periodical redundancies, e.g. by using adaptive codebook or pitch predictor
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L2019/0001—Codebooks
    • G10L2019/0011—Long term prediction filters, i.e. pitch estimation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

Provided is an audio encoding device which can detect an optimal pitch pulse when using pitch pulse information as redundant information. The device includes: a search start decision unit (121) which decides the oldest point among a plurality of points where a pitch pulse may exist; a pitch pulse candidate selection unit (122) which defines a search range as a range between the search start point and the point preceding the point of the head of the current frame by one and selects a decoding sound source vector having a large amplitude in this search range as a pitch pulse position candidate; a selector switch (125) which successively switches a plurality of pitch pulse position candidates inputted from a pitch pulse candidate selection unit (122) for output to a pulse sequence generation unit (123) and an error minimization unit (124); a pulse sequence generation unit (123) which generates as a pulse sequence, a vector generated as an adaptive codebook component from the pitch pulse in the current frame when a pitch pulse is set to be a pitch pulse position candidate inputted from the selector switch (125).
PCT/JP2008/000407 2007-03-02 2008-02-29 Voice encoding device and voice encoding method Ceased WO2008108083A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US12/528,880 US8364472B2 (en) 2007-03-02 2008-02-29 Voice encoding device and voice encoding method
EP08710510A EP2128855A1 (en) 2007-03-02 2008-02-29 Voice encoding device and voice encoding method
JP2009502461A JP5596341B2 (en) 2007-03-02 2008-02-29 Speech coding apparatus and speech coding method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007053530 2007-03-02
JP2007-053530 2007-03-02

Publications (1)

Publication Number Publication Date
WO2008108083A1 true WO2008108083A1 (en) 2008-09-12

Family

ID=39737981

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/000407 Ceased WO2008108083A1 (en) 2007-03-02 2008-02-29 Voice encoding device and voice encoding method

Country Status (4)

Country Link
US (1) US8364472B2 (en)
EP (1) EP2128855A1 (en)
JP (1) JP5596341B2 (en)
WO (1) WO2008108083A1 (en)

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US8725501B2 (en) * 2004-07-20 2014-05-13 Panasonic Corporation Audio decoding device and compensation frame generation method
US9082416B2 (en) * 2010-09-16 2015-07-14 Qualcomm Incorporated Estimating a pitch lag
RU2575993C2 (en) 2011-02-14 2016-02-27 Фраунхофер-Гезелльшафт Цур Фердерунг Дер Ангевандтен Форшунг Е.Ф. Linear prediction-based coding scheme using spectral domain noise shaping
KR101562281B1 (en) 2011-02-14 2015-10-22 프라운호퍼 게젤샤프트 쭈르 푀르데룽 데어 안겐반텐 포르슝 에. 베. Apparatus and method for coding a portion of an audio signal using a transient detection and a quality result
MY166394A (en) 2011-02-14 2018-06-25 Fraunhofer Ges Forschung Information signal representation using lapped transform
CA2827156C (en) 2011-02-14 2017-07-18 Tom Backstrom Encoding and decoding of pulse positions of tracks of an audio signal
MX2013009301A (en) * 2011-02-14 2013-12-06 Fraunhofer Ges Forschung Apparatus and method for error concealment in low-delay unified speech and audio coding (usac).
WO2012110415A1 (en) 2011-02-14 2012-08-23 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Apparatus and method for processing a decoded audio signal in a spectral domain
US9275644B2 (en) * 2012-01-20 2016-03-01 Qualcomm Incorporated Devices for redundant frame coding and decoding
CN104751849B (en) 2013-12-31 2017-04-19 华为技术有限公司 Decoding method and device of audio streams
CN107369454B (en) 2014-03-21 2020-10-27 华为技术有限公司 Decoding method and device for speech and audio code stream

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JP2005513539A (en) * 2001-12-14 2005-05-12 ノキア コーポレイション Signal modification method for efficient coding of speech signals

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EP0657874B1 (en) * 1993-12-10 2001-03-14 Nec Corporation Voice coder and a method for searching codebooks
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KR20070061847A (en) * 2004-09-30 2007-06-14 마츠시타 덴끼 산교 가부시키가이샤 Scalable coding apparatus, scalable decoding apparatus and methods thereof
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WO2005040749A1 (en) * 2003-10-23 2005-05-06 Matsushita Electric Industrial Co., Ltd. Spectrum encoding device, spectrum decoding device, acoustic signal transmission device, acoustic signal reception device, and methods thereof

Also Published As

Publication number Publication date
US20100106488A1 (en) 2010-04-29
US8364472B2 (en) 2013-01-29
EP2128855A1 (en) 2009-12-02
JP5596341B2 (en) 2014-09-24
JPWO2008108083A1 (en) 2010-06-10

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